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(No Model.)

N. W. HOLT.

ROLLER MILL. 10.266.152 Patented 00.17,1882.

N. PETERS4 PhuwLnhngmpher. whmgm, n, c

lilNrrnO Stratus "PafrnNr @erica F ONE-THIRD T() RICHARD K. NOYE, OF SAME PLACE.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 266,152, dated October 17, 182. Application filed March 9, 1832. (No model.)

To all whom t may concern:

Be it known that 1, NOAH W. HOLT, ofthe city of Buffalo, in the county ot' Erie and State of New York, have invented new and usetul 5 Improvements in Roller-Mills,of which the following is a specification. y

This invention relates to an improvement in the mechanism whereby the roller which is mounted in movable bearings is moved to- 1o ward or from the roller which is mounted in fixed bearings for adjusting` the space between the rollers or for separating the rollers in starting the mill, and more particularly to a roller supported in movable bearings which are rigidly connected, and provided With a single adjusting contrivance applied to the connected bearings in such manner that both bearings are moved simultaneously in either direction. zo The object ot my invention is to provide means for adjusting each bearing ofthe adjustable roller toward or from the stationary roller or other surface against which the adjustable roller operates to maintain the parallelism ot theroller with the stationary roller or other surface; and myinvention consists, to that end, of the devices hereinafter fully described, and pointed out in the claims'.

In the accompanying drawings, Figure 1 is 3o a side elevation of a pair of rollers provided with my improvement. Fig. 2 is an. end elevation, and Fig. 3 a top plan view thereof. Fig. t is a vertical section of the adjusting mechanism. Fig. 5 isa vertical section ofthe lower portion of the adjusting mechanism at right angles to Fig. 1.

Like letters of reference refer to like parts in the several figures.

A represents the frame of the machine, and

4o B a roller mounted in tiXed bearings b.

C represents the roller which is made movable toward and from the roller B, and c are the bearings in which thejournals ofthe roller C rotate. These bearings are each pivoted by 4 5 a horizontal holt, d, to a base-plate, D, which is adjustabiy secured to the frame A by bolts fand elongated openingsf', and an adjustingscrew,]'"-, or in any other suitable manner, so as to be adjustable toward and from the roller B.

E represents a bar which connects the bear- 5o ings c on the outer side of the roller C, and which may be cast in one piece with the bearings 0, as shown, or otherwise rigidly secured to the same, so as to cause both bearings to move simultaneously in either direction.

g represen ts a spiral or other suitable spring, applied to the connecting-bar E in such manneras to press the roller C against the roller B. As shown in the drawings, the springg rests upon the frame A, and bears against the 6o under side ot' the har E.

lt represents ascrewrod,whieh is surrounded by the spring g, and which passes with its npper end through an opening', h', in the connecting-bar E. The upper end of the screwrod /i is provided with a hand-wheel or thumbnut, h2, bearing upon the upper side ot' the connecting-bar.

tis a ring formed at the lower end ot' the screw-rod h; andj is an eccentric mounted on 7o a horizontal shalt, 7c, and engagingin the ring i, so that the screw-rod It is raised and lowered by turning the eccentricj. The shaft k turns in bearings l, formed on the i'rame A ot' the machine, and is provided at either end with a hand-lever, n, whereby it can he turned. The spring g tends to hold the roller G against the roller B. By tightening the hand-wheel h2 the spring is compressed and both bearings c are swung on their pivots away from the roller B. 8o Hence the position of' the, roller C with reference to the rollerB can he nicely regulated hy the handy-Wheel h2. lt' the roller C should not be parallel with the roller B, it is easily made parallel with the same by adjusting either or 85 both of the base-pieces l). The throw ofthe eecentriej is made so large that by giving the shaft lt' a half-turn, so' as to bring the center of the eccentric on the lower side of the shaft, the roller C is separated sufh'ciently from the 9o roller B to permit the mill to be easily started. By returning the eccentric to its upper position the roller Gis returned to its former working position without distnrbingits adjustment with reference to the roller B.

It will be seen from thet'oregoing that both bearings of the movable roller retain always the same relative position, and that any relaxation ofthe spring` fj affects both bearings alike, thereby keeping` the movable roller parallel with the roller supported in the fixed bearings.

Then the device is applied to a roller-mill (.ontz'iiningl` two pairs ot' rollers the shaft lo is extended to the opposite end of the machine, and the eccentrics ot both adjusting devices arc mounted on this shat't, so that by turning' thc shaft both movable rollers are simultaneously swung away from the stationaiy rollers for starting` the mill.

I claim as my invention- 1. The con'ibination, with a roller, G, of mov able bearings c, connecting-bar E, and basepieces l), upon which The bearings care supported, and means for adjusting them toward and from the roller or other surface against which the roller C operates, substantially as set forth.

2. The combination, with a roller, C, ofmovable hearings c, connecting-bar E, provided with an adjusting,` device, base-pieces D, and means for adjusting them toward and from the roller or other surface against which the roller C operates, and pivots d, whereby the bearings c are attached to the base-piece D, substantiallbY as set forth.

NOAH W. HOLT.

Witnesses:

JNO. JoNNim CHAs. F. Garau. 

